Loom for weaving tufted fabrics.



PATENTED JUNE 30, 1903.

J. A. CLARK. LOOM FOR WEAVING TUPTED FABRICS.

APPLICATION FILED APR. 11, 1903.

2 SHEETS-SHEET 1.

N0 MODEL.

No; 732,518. i PATENTED JUNE 30, 11903.

I J. A; CLARK. LOOM FOR WEAVING TUFTED FABRICS.

APPLICATION IILBD APR. 11, 1903.

N0 MODEL.

2 SHEETSSHHET.2.

UNITED STATES Patented June 30, 1903.

PATENT OFFICE.

JOHN CLARK, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMP- TON &' KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

SPECIFICATION forming part of Letters Patent No. 732,518, dated June 30, 1903;

Application filed April 11, 1903.

To all whom it may concern: I

Be it known that I, JOHN A. CLARK, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts,haveinvented certain new and useful Improvements in Looms for Weaving Tufted Fabrics, of which the following is a specification.

My invention relates to looms for weaving IO tufted fabrics and to that class of looms shown and described in United States Letters Patent No. 490,237, in which are employed a series of beams carried by an endless chain n. and having the tuft-yarns wound thereon I5and a series of carriages connected with said beams and provided with a series of quills or yarn-carriers for the individual tuft-yarns. The beams and carriages are taken from the chain one at a time by transferring-arms and the quills inserted into the shed to form the tufts in the well-known way and as fully described in said patent.-

My invention relates more particularly to a supplemental attachment or mechanism M 3,5 therefrom held firmly and prevented from having any swinging motion, so that the spring-arms on the carriage, which engage a link of the endless chains to connect the carriage therewith, will be in position to be propo erly engaged by the releasing-fingers on the transferring-arms to allow of the disengagement of said spring-arms from the links of the endless chains and the removal of the beam and carriage from the chain by the transferring-arms.

The object of my invention is to provide a simple and efiective automatic mechanism for holding firmly in proper position a tuftyarn beam and carriage when they reach their Serial No. 152,275. (No modelfi' lowest position at the lower end of the end less chain preparatory to the engagement of the transferring-arms and the removal from the endless chain of said beam and carriage.

Myinvention consists in certain.novel features of construction of myimprovements, as will be hereinafter fully described.

Ihave only shown in the drawings a de tached portion of a loom of the class referred to and shown and described in said patent -'No. 490,237 with my improvements applied thereto sufficient to enable those skilled in the art to which my invention belongs to make and use the use.

Referring to the drawings, Figure 1 is an end View of a loom-frame, showing a portion 6 of the endless chain with one tuft-yarn beam and carriage attached thereto and at its lowest position on the chain and my improvements combined therewith, the lower part of the sprocket-wheel being broken away; and

Fig.2 is a front view of the upper part of the loom shown in Fig. '1' looking in the direction ofarrow at, same figure, and showing also the sprocket-wheels for the upper part of the endless chains carrying the tuft-yarn beams and carriages.

In the accompanying drawings, 1 is the loom-frame. 2 2 are hangers supported on the loom-frame and having at their lower ends journals 2 for the shaft 3, having fast on each end a sprocketwheel 4, around which passes the lower end of the two endless chains 5, carrying a series of tuft-yarn beams Sand carriages 7, carrying quills or tuft-yarn carriers 8, only one set of which is shown in the drawings, which are 'detachably connected at each end with the and well-known construction and operation and fully described and shown in said Patent No. 490,237.

I will now describe my improvements,which relate only to a supplemental attachment or mechanism for firmly holding in position the tuft-yarn beams and carriages when they reach their lowest' position at the lower end of the endless chains preparatory to being removed by the transferrin g-arms. (Not shown.)

On the lower ends of the hangers 2 in this instance are formed two inwardly-projecting arms or lugs 12, having pivotally attached to their ends a clamp lever or arm 13, with its clamp end grooved or recessed, as shown at 13, Fig. 1, to engage the upper part of the rounded ends 6 of the. tuft-yarn beam 6. A coil spiral spring 14 is confined between each supporting-arm 12' and the clamp-arm 13 and acts to force down the arms 13 onto the edge of the enlarged ends 6' of the tuft-yarn beams 6. To a projection on the outer end of each clamp-arm 13 is pivotally connected the lower end of a link or connector 15. The upper end of each link or connector 15 is pivotallyconnected to a crank-arm 16, fast on a rook-shaft 17, mounted in suitable bearings 18 on the frame 1. A third crank-arm 19 is also fast on the shaft 17 and is pivotally connected, through a connector 20, to one end of a contrally-pivoted lever 21, pivoted to a stud 22 on theloom-frame 1. (SeeFig. 1.) The otherend of said lever 21 has a roll 21 thereon, which is adapted to engage the periphery of the cam 23, fast on the driven shaft 24, mounted in bearings 25 on the loom-frame. The spring 14, through intermediate connections, acts to hold the roll 21' on thelever 21 in engagement with the periphery of the cam 23.

From the above description, in connection with the drawings, the operation of my improvements will be readily understood by those skilled in the art.

The periphery of the cam 23 is so shaped that through intermediate connections the clamp-levers 13 are positively raised to disengage them from the ends of the tuft-yarn beams during the revolution of the endless chains, said chains having a regular intermittent motion; but when the endless chains are stationary preparatory to the removal of the tuft-yarn beams and carriages from the endless chains by the transferring-arms (not shown) the clamp-levers 13 are moved down through the action of the springs 14 to engage the upper surface of the rounded ends of the tuft-yarn beam and hold them firmly and prevent any movement thereof and of the carriage preparatory to the engagement of the releasing-fingers on the transferringarms with the spring-arms on the carriage.

It will be understood that the clamp-levers 13 have a spring-actuated movement to clamp and hold the ends of the tuft yarn beams and are positively raised to allow of the free passage thereunder of the tuft-yarn beam on the movement of the endless chains and preparatoryv to engaging the ends of another beam.

It will be understood that the details of construction of my improvements may be varied, if desired. u

I have shown two clamp-levers for the tuftyarn beam, one at each end of the beam; but only one lever may be used at one end of the beam.

Having thus described myinvention, what I claim as new, and desire to secure by Letters Patent, is

1. In a loom for weaving tufted fabrics, the combination with the endless chains, and the tuft-yarn beams, and carriages having the quills or tuft-yarn carriers thereon, and detachably connected to the endless chains, of a clamp-lever supported above the tuft-yarn beam, and means to cause said lever to engage the enlarged end of the beam on its edge when it is in its lowest position on the lower end of the endless chains, and to cause said lever to be positively raised out of engagement with the beam, substantially as shown and described.

2. In a loom for weaving tufted fabrics, the combination with the endless chains, and the tuft-yarn beams and carriages having the quills or tuft-yarn carriers thereon, and detachably connected to the endless chains, of a clamp-lever supported above the tuft-yarn beam, and means to move down said lever to J. A. CLARK.

Witnesses:

J. O. DEWEY, M. HAAS. 

